Protector for the beads of boiler-flues.



J. E. LANGDON.

PROTECTOR FOR THE BEADS 0F BOILER FLUBS. APPLICATION FILED MAY 2a. 1912.

1,1 12,373. Patented Sept. 29, 1914.

um/MM q vi hwoow Z nrnn STATES PA ENT. OFFICE.

JAMES E. LANGDON, or PHILADELPHIA, PENNSYLVANIA, ASSIGNOR or ONE-HALF 'ro enoraen n. ROLLINS, or PHILADELPHIA, PENNSYLVANIA.

PROTEG'IOR FOR THE BEADS OF BbILER-FLUES.

Specification of Letters Patent. Patented Sept. 29, 1914.

Application 1118a May as, 1913. Serial No. 770,385.

To all whom it may concern Be it known that I, JAMES E. LANGDON, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Protectors for the Beads of BoilenFlues, of which the following is a specification.

My invention relates to new and useful improvements in protectors for beads of boiler fines, and has for its object to provide an exceedingly simple and eflective device of this character whereby the ends of the boiler flues may be protected from the action of the fire, the gases thrown off by the fire, or other deteriorating elements.

A further object of the invention is to provide a device of this character which may be readily and quickly attached to the ends of the boiler flues without having to interfere with the flue sheet, or without changthe construction of the parts in any detail.

Another object of the invention is to provide a protector for the ends of boiler flues of such construction that it may be embedded in and attached to the flue sheet for making a tight joint which will prevent the passage of liquid, air or gas.

A still further object of the invention is to construct the inner end of the body of the protector in such manner as to permit its ready insertion in the end of the flue, and afterwards rolled out or expanded forming an internal beveled edge to permit the passageof a cleaning means therethrough without obstruction.

Another object of the invention is to provide an effective means for calking the joint between the rim of the protector and the flue sheet.

With these ends in view this invention consists in the details of construction and combination of elements hereinafter set forth, and then specifically designated by the claims.

In order that those skilled in the art to which this invention appert-ains may understand how to make and use the same, I will describe its construction in detail, referring by numeral to the accompanying drawing forming a part of this specification, in which Figure 1, is a longitudinal sectional view of a protector, made in accordance with my invention. Fig. 2, is a similar view of a modified form of my invention. Fig. 3, is an end view thereof. Fig. 4': is a longitudinal sectional view of a portion of one end of a flue, flue sheet and my protector, showing t 1n position with the packing ring situated in the groove.

In carrying out my invention as embodied in Fig. 1, 2 represents the body provided with an outwardly projecting flange 3, rolled to correspond with the bead 4: of the boiler flue 5, mounted in the flue sheet 6, the edge of the flange 3 has formed therein an inverted V shaped annular groove 7, thereby producing a. pair of annular knife edges 8 which are embedded in the outer surface of the flue sheet when the body 2 of the protector is inserted in the end of the flue, thus forming an exceedingly tight oint. In manufacturing iny protectors, the inner edge of the body 2 is beveled inward from the outer face as at 9, so that the pr tector may be readily inserted in the end of the flue, and when in position said inner end is rolled out or expanded against the inner surface of the flue, thereby fastening said protector to the flue, and at the same time producing an inner beveled end 10, which extends outward from the inner surface of the body 2 to permit the free passage of a cleaning means through the fines.

In practice the body 2 of the protector is inserted in the end of the flue, and is then driven home, causing the knife edges 8 to out into and embed themselves in the front face of the flue sheet, thus covering the body I 4 of the flue, and making a tight joint there about to prevent any deteriorating action of injurious elements upon the ends of the flues, thereby increasing the life of said flues, and at the same time the end of the flue and its bead is thickened sufliciently to cause it to contract and expand in substantially the same degree as does the flue sheet.

In Fig. 2, I have illustrated another form of my invention, wherein I form an inverted U shaped annular groove, producing the plurality of knife edges 8. I form the U shaped groove particularly for use with a metallic calking ring 12 which lies between the face of said U shaped groove and the The metallic ring 12 is preferably made of copper, and before being used is circular in cross section, but when the protector is mounted in position and driven home, said ring will be caused to coincide with the contour of the surrounding objects, thereby compensating for any irregularities in the parts.

Of course I do not wish to be limited to the exact details of construction as here shown as these may be varied within the limits of the appended claims without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful, is

1. The combination with a flue and the flue sheet of a boiler of a protector comprising a body, the inner lower edge of which is beveled inward from the outer surface and adapted to be rolled out to secure the protector in place, and a flange carried by the opposite end of said body, said flange having an inverted U shaped groove in the edge thereof, thereby producing two annular concentric knife edges adapted to be embedded in the flue sheet for the purpose specified.

2. The combination with a flue and the flue sheet of a boiler of a protector comprising a body, the inner lower edge of which is beveled inward from the outer surface and adapted to be rolled out to secure the protector in place, and a flange carried by the opposite end of said body, said flange havingan inverted U shaped groove in the edge thereof, thereby producing two annular concentric knife edges adapted to be embedded in the flue sheet, and a packing ring contained within said groove.

In testimony whereof, I have hereunto affixed my signature in the presence of two subscribing witnesses.

JAIJES E. LANGDON.

Witnesses:

MARY E. HAMER, MOLLIE ToBIAs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

